Numerade

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Consider the same sample in Question 1B. At t = 0, the illumination is turned off. Only consider direct recombination of electrons and holes. (A). What is recombination coefficient \alpha r ? (B). What are generation and recombination rate at t = 0 +?

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1.Which of the following is considered to be another legitimate communication principle: A) It is reversible. B) It is irreversible. (C) It is something that cannot be ignored.

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A constitutional doctrine or convention according to which public servants should not engage in activities that are likely to impair or appear to impair their impartiality or the impartiality of the public service.

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(a) How many fringes appear between the first diffraction-envelope minima to either side of the central maximum in a double-slit pattern if $\lambda = 488\text{ nm}$, $d = 0.193\text{ mm}$, and $a = 23.8\text{ \(\mu$m}\)? (b) What is the ratio of the intensity of the third bright fringe to the intensity of the central fringe? (a) Number 17 Units No units (b) Number 0.736 Units No units

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4. Use the quotient rule to find the derivative with respect to the independent variable. $f(x) = \frac{3 - x^3}{2 + 5x}$ 5. Differentiate the function with respect to the independent variable. The derivative should be simplified and written in a similar format as the original function. $f(x) = \sqrt{x}(x^3 - x^2)$ 6. Find the tangent line, in slope-intercept form, of $y = f(x)$ at the specified point. $f(x) = \frac{-3}{x} + \frac{5}{\sqrt{x^2 - 1}}$, at $x = 1$ 7. Suppose that $f(5) = -4$ and $f'(5) = 6$. Let $y = \frac{1}{f(x)}$, find $dy/dx$ when $x = 5$.

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Evaluate the following indefinite integral: \int \frac{1}{(49 - x^2)^{3/2}}dx = \boxed{} + C

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1. Evaluate the following: (a) $\int_1^5 (4 - 2|3 - x|) dx$ (b) $\frac{d}{dx} \int_{2x}^{x^2} \sin(t^2) dt.$

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2 The Base of the Octal number systems is (1 Point) 8 2 16 10 3 A 6-to-64 decoder can be designed using ? (2 Points) Three 4-to 16 decoders and two 2-to-4 line decoder Three 4-to 16 decoders and one 2-to-4 line decoder Four 4-to 16 decoders and one 2-to-4 line decoder Four 4-to 16 decoders and two 1-to-2 line decoder

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Problems 1. (10 points) A flat loop of wire consisting of a single turn of wire with radius 0.32 m and resistance of 2? is located in a magnetic field as shown. The magnetic field decreases uniformly in magnitude from 6T to .54T in 0.25s. Calculate the current in the loop. What is the direction of current (CW or CCW)?

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4. (5 points) y[n] + 3*y[n-1] + 2*y[n-2] = 5*x[n-1] + 2*x[n-2], find a) transfer function H(z) = Y(z)/X(z) b) inverse Z-transform c) calculate and plot former 3 points when the input is impulse function.

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blanca c.